Road Bike

Glass Slipper
Shoe Sale

Mountain Bike

What's New?

Is it New Bike Time? Always!
It's pretty obvious this is when people are out on the roads & trails having fun on their new bikes. This is a great time for a new bike because even the worst "winter" you'll see in the Bay Area offers plenty of nice days for riding, and who wants to waste a nice day? Chain Reaction features the very best bikes from Trek & Electra, as well as the highest-quality travel bikes from Bike Friday. Road, Mountain, Hybrid, Electric assist, Kids... we've got them all. Probably the best selection in a single location you'll find anywhere on the peninsula too.
Got a bike that needs repairs?
We can handle that! If you purchased your bike from us, remember that you can bring it in anytime, without calling ahead, for minor on-the-spot adjustments of brakes, gears and wheels (at no charge; this is included with any bike purchased from us). For flat tires, again, no appointment needed. Where possible we try and do flat tires while you wait, but there will be times that's not possible. At most you will be leaving your bike overnight. For normal (bigger) repairs, calling ahead to schedule an appointment might make sense because the repair backlog at better shops sometimes goes from overnight to 5 days in the blink of an eye!
It's E-Bike time at Chain Reaction! E-Bikes are the latest thing; find out why! Commute to the office without needing a shower, bring home the groceries (even if you live on top of a hill!) or keep up with your obsessive-cyclist partner. Prices start at just $1299 (Oyama folding E-bike) up to the incredible Trek Super Commuter 8 at $5199.

Disc Brakes for Road Bikes- Making the right choice

Disc brakes are the latest thing for road bikes. But are they the right choice for you? We discuss the trade-offs including benefits, cost, added weight and maintenance requirements.

Just a few of the bikes we sell. One of them is just right for you!

Electra Loft 7D - Ladies'
$469.99 $499.99 6% Savings
This modern day classic is built to ride. It’s lightweight. It’s durable. I...
Trek Domane SLR 6 Disc Women's
$4,499.99 $5,499.99 18% Savings
Domane SLR 6 Disc Women's is built on the finest Domane frame we've ever ma...
Trek FX 3 Women's
$649.99 $689.99 6% Savings
Fitness, simplified FX offers a best-of-both-worlds combination of road ...
Electra Townie Original 7D EQ Men's
$609.99 $649.99 6% Savings
You'll love gliding around town on Electra's Townie Original 7D. Comes with...
Trek FX Sport 4
$1,149.99 $1,149.99 - $1,199.99 4% Savings
FX Sport 4 is where performance fitness bikes begin. A lightweight frame, 2...
Trek FX Sport 5 Women's
$1,799.99 $1,889.99 5% Savings
FX Sport 5 Women's is a carbon fiber fitness bike for riders who want the s...
Trek FX 3
$649.99 $689.99 6% Savings
Fitness, simplified FX offers a best-of-both-worlds combination of road ...
Trek FX 2 Women's
$499.99 $539.99 7% Savings
Fitness, simplified FX offers a best-of-both-worlds combination of road ...
Trek Marlin 7
$729.99 $779.99 6% Savings
Marlin 7 is where race-worthy mountain bikes begin. The smooth, lightweight...
Trek Domane SL 6 Disc Women's
$3,049.99 $3,599.99 15% Savings
Key features - Front and Rear IsoSpeed decouplers smooth rough roads - ...
Trek FX 2 Women's Stagger
$499.99 $539.99 7% Savings
FX 2 Women's is a versatile hybrid bike for fitness, commuting, or riding f...
Trek Precaliber 16 Boy's
$229.99 $239.99 4% Savings
Key features - Better than big box bikes, and your kid deserves it - Fr...